Snubber



E. P. BRANDT swuasmz Jan. 31, 192 v v 1,657,953

Filed y 10. 1926 5 Sheets-Sheet 1 gvwentoz Edwin PB/"andf- W f e'sses I2% [31W Patented Jan. 31, 1928 resists UNITED STATES? PATENT OFFICE.

EDWIN P. BRANDT, F CASPER, WYOMING.

SN'UBIBER.

This invention relates to devices for preventing rebound in motorvehicles after dcflecting of the vehicle springs incident to travel overa roughroadway.

One of the important features of the invention to provide a snubberofsuch a character, that the same can be readily applied to differenttypesand sizes of vehicles, the parts of the snubber being reversible soas to permit the same to be used on either side of the car. i

Another object of the invention is the provision of a snu'bber of theflexible cable or strap type embodying novel means connected with andengaging the strap or cable for limiting the travel thereof, said meansbeing so constructed and arranged as to effectively act to check therebound of the vehicle during the short limited travel of the strap.

Another object, of the invention the provision of friction shoesarranged in a novel manner for engaging the strap for checking thesliding movement thereof during the. rebound of novel spring pressedlevers operatively connected with the strap for acting against themovement of the strap according to the travel thereof.

A still further object of the invention is to provide a novel snubber ofthe above character which will be durable and efficient in use, one thatwill be simple'and easy to manufacture and one which can be incorporatedwith a motor vehicle at a small cost. i p

With these and other objects in view, the invention consists in thenovel construction. arrangement and fori'nation of parts, will behereinafter more specifically described, claimed, and illustrated in theaccompanying drawings, in which drawings a preferred embodiment of theinvention has been shown.

Figure 1 is a side elevation of the improved snubber showing the same inoperative position on a vehicle, only a sufficient portion of thevehicle being shown to illustrate the connection of the snubber with.the chassis and axle,

Figure 2 is an edge elevation of the sameshowing the same connected inplace to one of the side channel beams of the chassis,

Figure 3 is an inner side elevation of the snubber removed from thevehicle.

Figure t is a section through the snubber Application filed July 10,1926. Serial No. 121,692.

illustrating the arrangement of the parts when the strap is not undertension,

Figure 5 is a similar view showing the strap under tension and thenormal arrangement of the parts when the same is applied to a vehicle,the guide and shield plate for the friction shoes being shown in place,

Figure 6 is a bottom plan view of the main casting with the variousoperating parts positioned thereon,

Figure 7 is a section through the snubber taken on the line 7-7 ofFigure t looking in the direction of the arrows,

Figure 8 is a detail perspective view of the main casting with theoperating parts removed therefrom,

. Figure 9 is a detail perspective view of one ofthefriction shoes,

Figure 10 "is a detail perspective View of one of the resistance levers,

Figure 11 isa detail perspective view of the other resistance lever,

, Referring to the drawings in detail, wherein similar referencecharacters designate corresponding parts throughout the several views,the letter A generally indicates one form of the improved snubber and Ba portion of the vehicle with which it is as sociated. The vehicle Bforms no part of the present invention and has simply been shown toillustrate the use of the snubber and only a fragment of one of thesides of the channel beams 10 and axle 11 has been shown.

The improved device A comprises a. casting 15. which includes a diskshaped body plate 16 having formed on its outer face an attaching plate17. The inner face of the plate 16 has formed thereon a hub 18, which inthe present instance is provided with a pair of spaced radiallyextending guide openings 19 and 20 arranged at rightangles to oneanother. Intermediate the slide openings 19 and 20, the hub 18 isprovided with a relatively large cut out portion 21,

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the walls of which are arranged at right- The axial center of 22 anglesto one another. the hub is provided with an opening which communicateswith the opening 21 and it is to noted that the hub has its outer facespaced inwardly from the periphery of the disk 16. The plate 16 isprovided with an axial internally threaded opening 23 for a purpose,which will be hereinafter more fully described. @utwardly extendingtheir outer ends are provided with arcuate ears 2e and are formed on thehub at the sides of the opening 21 and the plate 16 directlybelow theears 24f and is provided with openings 26 and 27 which are in alineinentwith the openings 28 and 29 formed in the said ears. Lugs 30 and 81 arecarried by the side walls of the opening 21 as clearly shown in Figure 8of the drawings.

Friction blocks 32 and 33 are slidably inounted respectively in theslide ways and 20 and these friction blocks are normally urged out vardradially from the hub by suitable expansion springs 84 which are coiledabout a guide pin 35 secured to the inner'walls of the guide ways 19 and20. The outer ends of the springs Set are received within relativelydeep recesses 36 formed in the inner faces of the blocks and theserecesses are of such a diameter so as to entirely house the spring andhe pins 35 when the blocks are forced inwardly to their full extent. Theblocks 32 and 33 at friction faces 37 and the blocks noi-inally projectbeyond the hubs, but when the blocks are forced inward to their fullextent the friction faces 37 will lie flush with the outer face of thehub" A cover and guide plate 39 of segmental shape is secured to the huband partially overlies the guideways i9 and 20 and the axial opening 22.The portion of the plate 39 which overlies the axial opening is providedwith a suitable opening 4d) which alines with the internally threadedopening 23 of the plate and a suitable shaft ll is connected Witn andextended through these openings. In order to resist the pull of thestrap directly levers 4i?) and 414 are provided. The inner end of thelever s3 is provided with a hinged barrel and with pivot ears 46 at itsouter end.

The opposite ends of the lever are provided with pairs of pivot ears i?and 48 respectively. The barrel 45 is placed between the pivot ears s7and the stub shaft il is placed through the same and these levers areconfined between the plate 16 and the plate 39, in the opening or space21. The outer face of the lever 43 is provided with a socket l9 for thereception of an expansion spring which is fitted about the pin 30. Theinner face of the lever 4rd provided with a similar socket 51 for thereception of an expansion spring 52 which is fitted about a pin 53carried by the inner face of the lever 43. It is to be noted that theinner face of the lever l?) is so formed as to permit a portion thereofto ride into the lever l l between the pivot ears 47 thereof.

The outer pair of cars d8 of the lever 44: receives a suitablereinovable pin 54L- to which is clamped or otherwise secured to thestrap 42' and this strap is placed between the cars 46 of the lever 41:3and then trained about the hub 18. 'lfhe strap i2 is then trained underthe pin which is placed in the alined openings 22) and 2? herctoforereferred By this arrangement of the strap it can be seen that thefriction blocks and 233 18:11 at all times against the inner face of thestrap sfl thus tending to oppose the sliding movement thereof.

A protecting;- casing (3U is provided for housing the various operatingparts so as to protect the same from dr. (1, road grit and the like ndthis casing is litted directly over the hub and is secured to thepcripheuv of the plate 16 as at bl. The side wall of the casng till isprovided with an opening 6: through which the strap 415 is to 'l liostub shalt ll.

extend. prererably provider. with lubricating (53 so as to permit thehibrication of the levers n; and ll: in their s-nvingingmovement on thesaid shaft and grease can be forced into the passageway by any desiredmeans.

In applying the snubbcr in position, the screw stud (iii provided andthis stud is fitted through an opening in the side chun nel boa-n1 1tand threaded into an Olfltlllllg ($6 in the enlargement 17 provided forthat purpose. It spacinp collar 67 placed on the screw stud between thebeam ll) and the enlargement 1?. it stop stud ($8 is also thread-ed inthe enlar ei'ncnt l"? for engaging; the lower face of die channel beam10 of the chassis so as to prevent rotation of the snubber beam andcasting thereon.

After the device is applied as shown in Figure 2 of the drawings thestrap elil is pulled around the axle 1]. until spring 512 is compressedallowing the arm or lever l-l to come into engagement with the arm orlever .13 and the slide blocks are forced inwardly against the tensionof the springs Ell. 'lhe strap is now ready to be secured in placearound the axle and a suitable clump 'i'l) can be utilized for thispurpose.

Figure -lshows the position of the parts above described. During: theabove udjustinent the car must be without loud.

The device as shown in the drawings is assembled for right rear or frontleft. To attach to left rear and right front it is merely neccssarv toI'CIEIOYC the plates till, pins 5e and 5:") and place them in the holesin the car 24: and in the car 48. and remove the strap and reverse thelovers .1-3 and llplacing the springs and with spring 50 over the pins251 and then replacing}; the strap.

dhcn a load is placed in the car, the vehicle springs are compressedaccording; to the weight. This compression of car springs causes thecontrol strap in to relax the pressure upon the parts coinpi ssed.during the adjustment of the strap. d hen the ill:

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car fraine has reached its lowest point. of vehicle spring compression,the levers l3, l i and-the slide blocks 3., and 33 and the strap l2 willbe in the position shown in Figure lof the drawings. As the body rises,.the control strap 4L2 tightens and at the same time causes a frictioneffect on slide bloclrs 32 and 33 and springs 34, and 52. (in therebound or rise of the vehicle body in position, the friction increaseson the strap 42. When the body rises beyond point of original adjustmentof the strap friction and resistance are increased by spring 50 cominginto play. When driving on smooth roads, the device comes into action torelieve vibration. lVhen the roads become rougher and the bumps greater,its resistance increases preventing violent spring reaction and shocksto passengers and cars.

Springs 52 should be sutlicient resistance to take up all slack in thestrap 12. The springs 34; should be less strength than the spring 50.Spring 50 should be of sufficient res stance to overcome combinedresistance of the springs 3a and 52. The pin can have a roller mountedthereon and this pin and roller prevents the strap from pulling awayfrom the friction face of the hub of the casting. The device can beapplied to cars a number of different ways, such as by turning the sameupside down and pulling the strap over the pin 55 and its roller down tothe axle. This application of the device functions in the same manner asin the first position.

Another manner of attaching the snubber is as follows. The strap 42 canbe attached directly to the lever 43 with lever is turned over to facein opposite direction and insert spring 52 between the lever and thewall of the space 2].. The strap is brought around the hub in the samemanner as shown. The strap is brought over the pin 54 of lever 41-41 andthe slide blocks in the same position as shown.

lly adopting the last position it is necessary to use other means offastening the f nale of the car. The device has great range owing to thevarious means by which the same can be applied.

Changes in details may be made without departing from the spirit orscope of the invention, but:

l Vhat I claim as new is:

l. A device for preventing rebound in vehicles comprising a stationaryhub adapted to be secured to the frame of a vehicle, a flexible cabletrained about the hub, a pivoted spring pressed lever connected with theinner end of the flexible member to'oppose movement thereon, the outerend of the flexible member being adapted to be attached to the axle ofthe vehicle, and afriction block engaging the flexible member at a pointintermediate its length.

2. A device for preventing rebound in vehicles comprising a flexiblemember, a pivoted springtpressed lever carried by one portion of thevehicle and connected with the in nor end of the flexible member tooppose movement thereof, the outer end of the flexible member beingadaptcd to be connected to another portion of the vehicle movablerelative to the first mentioned portion, and a friction member engagingthe flexible member at a point intermediate its ends.

3. A snubb r for motor vehicles comprisa casting having a hub providedwith a cut out portion, a pair of levers pivot-ally,

connected together and to the hub at the axis thereof, a compressionspring between the levers and a compression spring between one of thelovers and the wall of the out out portion, a flexible member detachablysecured at its inner end to the first mentioned lever and trained aboutthe hub, and means for securing the flexible member to the axle of thevehicle.

4. A. snubber for motor vehicles comprising a casting including a hub, apivoted lever carried by the hub, spring means normally urging the leverin one direction, a strap st cured to the lever andtrained about thehub, a friction block carried by the hub, spring means normally urgingthe block radially of the hub in engagement with the inn er face of rthe strap, and means for securing the outer end of the strap to the axleof a vehicle.

5. A snubber for motor vehicles comprising a casting includingastationary hub, a spring pressed lever pivotally carried by the hub, astrap connected to the lever and trained about the hub, and a pluralityof spring pressed radially friction blocks carried by the hub engagingthe inner face of the strap, and means carried by the outer end of thestrap for securing the same to the axle of the vehicle.

6. A snubber for motor vehicles comprising a casting including a plateand a laterally projecting hub, a hub having a slide Way and a sectorshaped out out portion, a lever pivotally secured to the axis of the huband arranged in the cut out portion, spring means opposing the movementof the lever in one direction, a strap secured to the outer end of thelever and trained about the hub, a spring pressed friction blockslidably 1nounted in the guideway for engaging the inner face of thestrap, a guide roller arranged at one side of the cut out portion forthe strap, means for securing the outer end of the strap to the axle ofa vehicle, and a casing for housing the hub having a slot therein forpassage of the strap.

7. A snubber for motor vehicles comprising a casting having a laterallyprojecting hub provided with a segmental cut out por tion and a slideway, a pair of levers pivotally connected together and to the hub at theaxis thereof, the levers being reversible relative to one another, acompression spring between the levers and a compression between one ofthe levers and the Wall of the out out portion, a strap detechablysecured at its inner end to the first mentioned lever and trained aboutthe hub, a spring pressed radially urged friction block mounted in theslidevvay for engaging the strap, and means for securing the strap tothe axle of the vehicle.

8.111 asnubber of the character described, a casting including a plate,a laterally projecting hub carried by one face of the. plate, meanscarried by the opposite face of the plate for permitting the attachmentthere of to the chassis ot' the vehicle, the hub having a radiallyextending guiden ay and a segmental cut out portion, and laterallyextended pivot ears formed on the hub at the opposite sides of the cutout portion.

9. A snubber for motor vehicles comprising a casting having a laterallyprojecting hub provided with a segmental cut out portion, a pair ofpivoted levers connected together and to the hub at the axis thereof,the levers being reversible relative to one another, a compressionspring between the levets and a compression spring between one oi thelevers and the wall of the cut out portion, a flexible member detaehablysecured at its inner end to the first mentioned lever and trained aboutthe hub, a removable guide for the flexible member adapted to be securedto the hub on either side of the cut out portion, and means forsecuringthe strap to the flexible member at the axle of the vehicle.

In testimony whereof I ailix my signature.

EDlVIN l BRl-i't'NDT.

